Michael de Podesta has been doing the math on "Grime Dice" -- six sided cubes whose sides average out to 3.5, but whose face values are all radically different:
The interesting thing about these is that the odds of one die beating another are simple to calculate, but shift radically once you start rolling dice in pairs. It's a beautiful piece of counterintuitive probability math:
The amazing property of these dice is discernible when you use them competitively – i.e. you roll one dice against another. If you roll each of them against a normal dice then as you might expect, each dice will win as often as it will lose. But if you roll them against each other something amazing happens.
- Dice A will systematically beat Dice B
- Dice B will systematically beat Dice C
- Dice C will systematically beat Dice A
So the fact that Dice A beats Dice B, and Dice B beats Dice C does not ensure that Dice A will beat Dice C. Wow!
And how about this: If you ‘double up’ and roll 2 Dice A‘s against 2 Dice B‘s – the odds change around and now the B‘s will beat the A‘s ! Is that really possible? Well yes, and just to convince myself I wrote a Spreadsheet (.xlsx file) and generated the tables at the bottom of the article. If you download it you can change the numbers to try out other combinations.
Amazing Dice: Rediscovering surprise
(via Hacker News)
Thanks to everyone who came to last night's launch event at San Diego's Mysterious Galaxy! The next stop on my tour is an event at 7PM at The Strand in NYC where I'll be appearing with the award-winning investigative journalist Julia Angwin, who is pinch-hitting for Anand Giridharadas, who has had a family emergency.
[Editor's note: Gigapixel panorama impressario Jeffrey Martin (previously) offers us "an eye full from Eiffel" in this astounding gigapixel pano of Paris -Cory] I shot this gigapixel photo in autumn 2018 from the top of the Eiffel Tower. Using an SLR camera and a variety of telephoto lenses, I shot a few thousand photos from […]
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